My Grandad is great. He likes all the things that I like: spaghetti and football, tennis and astronauts. We do a lot together and have fun... unless he trips over and falls to bits. That can be a problem but it usually turns out all right in the end. The Grandad Whose Head Fell Off is a beautifully illustrated but very silly book, for children of all ages.

Packed with even more of the silly jokes that kids love, including knock-knocks, tongue twisters, riddles, traditional question and answer jokes, and more, Just Joking 3 will be presented in National Geographic Kids' colourful, photo-driven style. Q: What sound to porcupines make when they kiss? A: Ouch! Q: What do you get from a cow after an earthquake? A: A milkshake! Q: Why did the golfer wear two pairs of pants? A: In case he got a hole in one. Laughing animals, funny people, and other colourful photos are paired with each joke, adding an extra laugh on each page. National Geographic Kids' signature square trim size and candy-coloured palette make this fun-filled book perfect for tossing into a backpack to share with friends at school or camp.